Cocos simplifies game creation and distribution with Cocos Creator
Voxel game-creation platform with easy modding and game creation
A multi core friendly rigid body physics and collision detection lib
Multi-platform 2D and 3D game engine
Multi Theft Auto is a game engine
Solar2D Game Engine main repository (ex Corona SDK)
Open game and rendering engine packed into a JavaScript framework
3D Game engine with editor
Free, cross-platform 2D game engine powered by Haxe and OpenFL
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
Python MUD/MUX/MUSH/MU* development system
The multiplayer game engine
Modified source engine (2017) developed by valve and leaked in 2020
Mini game engine for games104
A hand-crafted 2D game library in Go
Cross-platform 3D scene editor based on three.js, golang and mongodb
An open source re-implementation of Diablo 2
2D Game Engine with Lua Scripting made on top of SFML
A project to create a blazingly fast Swift game engine
3D Game engine
Java Game Engine
A truly extensible cross-platform game engine